/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=40: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "base/basictypes.h"
#include "BluetoothAdapter.h"
#include "BluetoothDevice.h"
#include "BluetoothDeviceEvent.h"
#include "BluetoothService.h"
#include "BluetoothTypes.h"
#include "BluetoothReplyRunnable.h"

#include "nsDOMClassInfo.h"
#include "nsDOMEvent.h"
#include "nsThreadUtils.h"
#include "nsXPCOMCIDInternal.h"
#include "nsIDOMDOMRequest.h"

#include "mozilla/LazyIdleThread.h"
#include "mozilla/Util.h"

using namespace mozilla;

USING_BLUETOOTH_NAMESPACE

DOMCI_DATA(BluetoothAdapter, BluetoothAdapter)

NS_IMPL_CYCLE_COLLECTION_CLASS(BluetoothAdapter)

NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(BluetoothAdapter, 
                                                  nsDOMEventTargetHelper)
  NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(devicefound)
  NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(devicedisappeared)
  NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(propertychanged)  
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(BluetoothAdapter, 
                                                nsDOMEventTargetHelper)
  NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(devicefound)
  NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(devicedisappeared)
  NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(propertychanged)  
NS_IMPL_CYCLE_COLLECTION_UNLINK_END

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(BluetoothAdapter)
  NS_INTERFACE_MAP_ENTRY(nsIDOMBluetoothAdapter)
  NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(BluetoothAdapter)
NS_INTERFACE_MAP_END_INHERITING(nsDOMEventTargetHelper)

NS_IMPL_ADDREF_INHERITED(BluetoothAdapter, nsDOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(BluetoothAdapter, nsDOMEventTargetHelper)

class GetPropertiesTask : public BluetoothReplyRunnable
{
public:
  GetPropertiesTask(BluetoothAdapter* aAdapter, nsIDOMDOMRequest* aReq) :
    BluetoothReplyRunnable(aReq),
    mAdapterPtr(aAdapter)
  {
  }

  bool
  ParseSuccessfulReply(jsval* aValue)
  {
    const InfallibleTArray<BluetoothNamedValue>& values =
      mReply->get_BluetoothReplySuccess().value().get_ArrayOfBluetoothNamedValue();
    for (uint32_t i = 0; i < values.Length(); ++i) {
      mAdapterPtr->SetPropertyByValue(values[i]);
    }
    *aValue = JSVAL_VOID;
    return true;
  }

  void
  ReleaseMembers()
  {
    BluetoothReplyRunnable::ReleaseMembers();
    mAdapterPtr = nsnull;
  }
private:
  nsRefPtr<BluetoothAdapter> mAdapterPtr;
};

BluetoothAdapter::~BluetoothAdapter()
{
  BluetoothService* bs = BluetoothService::Get();
  // We can be null on shutdown, where this might happen
  if (bs) {
    if (NS_FAILED(bs->UnregisterBluetoothSignalHandler(mPath, this))) {
      NS_WARNING("Failed to unregister object with observer!");
    }
  }
}

void
BluetoothAdapter::SetPropertyByValue(const BluetoothNamedValue& aValue)
{
  const nsString& name = aValue.name();
  const BluetoothValue& value = aValue.value();
  if (name.EqualsLiteral("Name")) {
    mName = value.get_nsString();
  } else if (name.EqualsLiteral("Address")) {
    mAddress = value.get_nsString();
  } else if (name.EqualsLiteral("Enabled")) {
    mEnabled = value.get_bool();
  } else if (name.EqualsLiteral("Discoverable")) {
    mDiscoverable = value.get_bool();
  } else if (name.EqualsLiteral("Pairable")) {
    mPairable = value.get_bool();
  } else if (name.EqualsLiteral("Powered")) {
    mPowered = value.get_bool();
  } else if (name.EqualsLiteral("PairableTimeout")) {
    mPairableTimeout = value.get_uint32_t();
  } else if (name.EqualsLiteral("DiscoverableTimeout")) {
    mDiscoverableTimeout = value.get_uint32_t();
  } else if (name.EqualsLiteral("Class")) {
    mClass = value.get_uint32_t();
  } else if (name.EqualsLiteral("UUIDs")) {
    mUuids = value.get_ArrayOfnsString();
  } else {
#ifdef DEBUG
    nsCString warningMsg;
    warningMsg.AssignLiteral("Not handling adapter property: ");
    warningMsg.Append(NS_ConvertUTF16toUTF8(name));
    NS_WARNING(warningMsg.get());
#endif
  }
}

// static
already_AddRefed<BluetoothAdapter>
BluetoothAdapter::Create(nsPIDOMWindow* aOwner, const nsAString& aPath)
{
  // Make sure we at least have a path
  NS_ASSERTION(!aPath.IsEmpty(), "Adapter created with empty path!");
    
  BluetoothService* bs = BluetoothService::Get();
  MOZ_ASSERT(bs);

  nsRefPtr<BluetoothAdapter> adapter = new BluetoothAdapter(aPath);
  adapter->BindToOwner(aOwner);
  if (NS_FAILED(bs->RegisterBluetoothSignalHandler(aPath, adapter))) {
    NS_WARNING("Failed to register object with observer!");
    return nsnull;
  }
  return adapter.forget();
}

void
BluetoothAdapter::Notify(const BluetoothSignal& aData)
{
  if (aData.name().EqualsLiteral("DeviceFound")) {
    nsRefPtr<BluetoothDevice> d = BluetoothDevice::Create(GetOwner(), aData);
    nsRefPtr<BluetoothDeviceEvent> e = BluetoothDeviceEvent::Create(d);
    e->Dispatch(ToIDOMEventTarget(), NS_LITERAL_STRING("devicefound"));
  } else {
#ifdef DEBUG
    nsCString warningMsg;
    warningMsg.AssignLiteral("Not handling manager signal: ");
    warningMsg.Append(NS_ConvertUTF16toUTF8(aData.name()));
    NS_WARNING(warningMsg.get());
#endif
  }
}

nsresult
BluetoothAdapter::StartStopDiscovery(bool aStart, nsIDOMDOMRequest** aRequest)
{
  BluetoothService* bs = BluetoothService::Get();
  MOZ_ASSERT(bs);

  nsCOMPtr<nsIDOMRequestService> rs = do_GetService("@mozilla.org/dom/dom-request-service;1");
    
  if (!rs) {
    NS_WARNING("No DOMRequest Service!");
    return NS_ERROR_FAILURE;
  }

  nsCOMPtr<nsIDOMDOMRequest> req;
  nsresult rv = rs->CreateRequest(GetOwner(), getter_AddRefs(req));
  if (NS_FAILED(rv)) {
    NS_WARNING("Can't create DOMRequest!");
    return NS_ERROR_FAILURE;
  }

  nsRefPtr<BluetoothVoidReplyRunnable> results = new BluetoothVoidReplyRunnable(req);

  if (aStart) {
    rv = bs->StartDiscoveryInternal(mPath, results);
  } else {
    rv = bs->StopDiscoveryInternal(mPath, results);
  }
  if (NS_FAILED(rv)) {
    NS_WARNING("Starting discovery failed!");
    return NS_ERROR_FAILURE;
  }

  req.forget(aRequest);
  
  // mDiscovering is not set here, we'll get a Property update from our external
  // protocol to tell us that it's been set.
  
  return NS_OK;
}

NS_IMETHODIMP
BluetoothAdapter::StartDiscovery(nsIDOMDOMRequest** aRequest)
{
  return StartStopDiscovery(true, aRequest);
}

NS_IMETHODIMP
BluetoothAdapter::StopDiscovery(nsIDOMDOMRequest** aRequest)
{
  return StartStopDiscovery(false, aRequest);
}

NS_IMETHODIMP
BluetoothAdapter::GetEnabled(bool* aEnabled)
{
  *aEnabled = mEnabled;
  return NS_OK;
}

NS_IMETHODIMP
BluetoothAdapter::GetAddress(nsAString& aAddress)
{
  aAddress = mAddress;
  return NS_OK;
}

NS_IMETHODIMP
BluetoothAdapter::GetAdapterClass(PRUint32* aClass)
{
  *aClass = mClass;
  return NS_OK;
}

NS_IMETHODIMP
BluetoothAdapter::GetDiscovering(bool* aDiscovering)
{
  *aDiscovering = mDiscovering;
  return NS_OK;
}

NS_IMETHODIMP
BluetoothAdapter::GetName(nsAString& aName)
{
  aName = mName;
  return NS_OK;
}

NS_IMETHODIMP
BluetoothAdapter::GetDiscoverable(bool* aDiscoverable)
{
  *aDiscoverable = mDiscoverable;
  return NS_OK;
}

NS_IMETHODIMP
BluetoothAdapter::GetDiscoverableTimeout(PRUint32* aDiscoverableTimeout)
{
  *aDiscoverableTimeout = mDiscoverableTimeout;
  return NS_OK;
}

NS_IMETHODIMP
BluetoothAdapter::GetDevices(JSContext* aCx, jsval* aDevices)
{
  NS_WARNING("GetDevices not yet implemented.");
  return NS_OK;
}

NS_IMPL_EVENT_HANDLER(BluetoothAdapter, propertychanged)
NS_IMPL_EVENT_HANDLER(BluetoothAdapter, devicefound)
NS_IMPL_EVENT_HANDLER(BluetoothAdapter, devicedisappeared)